This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A124310 #17 Dec 15 2024 15:46:20 %S A124310 29,283,2819,28183,281807,2818043,28180393,281803927,2818039241, %T A124310 28180392407,281803924067,2818039240619,28180392406171, %U A124310 281803924061641,2818039240616359,28180392406163579,281803924061635783,2818039240616357827,28180392406163578069,281803924061635780589 %N A124310 Largest prime < 10*a(n-1), a(1)=29. %C A124310 Practically the same as A124263. - _R. J. Mathar_, Jun 18 2008 %H A124310 Vincenzo Librandi, <a href="/A124310/b124310.txt">Table of n, a(n) for n = 1..200</a> %t A124310 NestList[NextPrime[10#,-1]&,29,20] (* _Harvey P. Dale_, Aug 19 2011 *) %Y A124310 Cf. A124262, A124263. %K A124310 nonn %O A124310 1,1 %A A124310 _Artur Jasinski_, Dec 16 2006, corrected Jan 25 2007